Abstract: The invention relates to a joining system and method for floorboards, panels and sheaves, but foremost for parquetry. The system comprises boards intended to be joined together, wherein a first board has a groove fitting with a tenon in a second board. According to the invention, the first board (A) has has a groove (2) provided with a rib on the top side of a lower edge, and the second board (B) has a tenon (1) provided with a ridge on the underside. A cut (3) is provided in the lower corner of the groove. The cut (3) makes the lower edge of the groove more flexible and can also take up excessive glue. Through this, the joining will be very simple to perform, whilst at the same time providing a strong joint.

Abstract: The invention relates to a joining system and method for floorboards, e.g. for parquetry. The joining system comprises floor boards intended to be joined with each other, wherein a first board (A) has a protrusion fitting into a recess in a second board (B). The protrusion on the first board comprises hooks (1) with intermediate slots (2) or chamfers. The recess (11) in the second board (B) is delimited on the top side by a solid edge (3), and on the bottom side by an edge having heads (4) dimensioned to be inserted through the slots (2) of the first board (A). The invention will replace the traditional groove and tenon technique. By providing slots or chamfers in the protrusion corresponding to the tenon, and corresponding cuts in the lower limiting edge of the groove, the boards can be joined in a substantially vertical or transversal movement and then be locked by a horizontal movement in the longitudinal direction of the boards. At the same time, the protrusion is shaped like hooks engaging the groove.

Abstract: A method and a plant in processing, especially cutting objects such as timber.The invention relates to a method of cutting up elongate objects such as boards e.g. for providing parquet blocks. The method relates, inter alia, to preventing the creation of unnecessary waste and includes measuring the length of every board (6) between its leading edge (L) and trailing edge (T) by advancing the board (6) between rollers (16) so that pulse trains corresponding to the respective board length are obtained. These are stored in a dator (21) register, markings (10-15) for possible defects (7-9) being positionally registered.